Lever switch for safe breaking of a circuit of an exercise apparatus

Abstract

A lever switch for safe breaking of a circuit of an exercise apparatus includes two conductive copper pieces spaced apart and stably received within a housing by means of elastic pieces. A rotatable cylinder with two journals is positioned in the area of the contact portion of the conductive copper pieces within the housing. The rotatable cylinder is provided with a contact polygon at one side thereof such that the contact portion of the rotatable cylinder is constantly clamped at the top and bottom ends of the contact polygon. A conductive wire is embedded within the contact polygon. As a result, an insertion lever may fit into the body of the rotatable cylinder for in-place-moving the rotatable cylinder such that the contact polygon is turned to be detached from the conductive wire or to be in contact with the contact portion of the conductive copper pieces for safe breaking and making of a circuit.

1. A lever switch for safe breaking of a circuit of an exercise apparatus wherein two conductive copper pieces are spaced apart and stably received within a housing by means of elastic pieces, and wherein a rotatable cylinder with two journals is positioned in the area of the contact portion of the conductive copper pieces within the housing, and wherein the rotatable cylinder is provided with a contact polygon at one side thereof such that the contact portion of the rotatable cylinder is constantly clamped at the top and bottom ends of the contact polygon, and wherein a conductive wire is embedded within the contact polygon,
 whereby an insertion lever may fit into a body portion of the rotatable cylinder for in-place-moving the rotatable cylinder such that the contact polygon is turned to be detached from the conductive wire or to be in contact with the contact portion of the conductive copper pieces for safe breaking and making of a circuit. 
 
     
     
       2. A lever switch for safe breaking of a circuit of an exercise apparatus, comprising a housing, two conductive copper pieces, two elastic pieces, a rotatable and cylindric element and an insertion lever,
 wherein the housing includes a guide slot within the movement range of the insertion lever; 
 wherein the conductive copper pieces are stably positioned within the housing and spaced apart, and each of the conductive copper pieces includes an insertion portion at one end thereof and a contact portion at the other end thereof; 
 wherein the elastic pieces are interposed between the housing and the conductive copper pieces; 
 wherein the rotatable cylinder includes two journals at both sides thereof, and a contact polygon is positioned in the area of the contact portion of the corresponding conductive copper piece, and a conductive wire is embedded within the contact polygon, and an insertion hole is formed in the rotatable and cylindric element, and the contact portion is constantly clamped at the top and bottom ends of the contact polygon of the rotatable cylinder; and 
 wherein the insertion lever fits into the insertion hole of the rotatable cylinder for moving the rotatable cylinder, and the insertion lever is detachable from the insertion hole as well, and a cord hole is disposed at one end thereof; 
 whereby the rotatable cylinder may be turned by the insertion lever such that the contact polygon of the rotatable cylinder is detached from the conductive wire or to be in contact with the contact portion of the conductive copper pieces for safe breaking and making of a circuit. 
 
     
     
       3. The lever switch for safe breaking of a circuit of an exercise apparatus as recited in  claim 2 , wherein a position-limiting element is disposed near the guide slot of the housing, and wherein the insertion lever includes an annular groove facing to the position-limiting element such that the insertion lever has to be moved to a certain circuit-breaking place for the removal from the rotatable cylinder.